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Native Orchid Society South Australia Journal of the Native Orchid Society of South Australia Inc PRINT POST APPROVED VOLUME 23 NO. 6 PP 54366200018 JULY 1999 NATIVE ORCHID SOCIETY OF SOUTH AUSTRALIA Post office box 565 Unley 5061 The Native Orchid Society of South Australia promotes the conservation of orchids through the preservation of natural habitat and through cultivation. Except with the documented official representation from the Management Committee no person is authorised to represent the society on any matter. All native orchids are protected plants in the wild. Their collection without written Government permit is illegal. PRESIDENT: SECRETARY: Mr Bill Dear Cathy Houston Telephone: 82962111 Telephone: 8356 7356 VICE-PRESIDENT (and New members Coordinator) Mr David Pettifor Tel. 014095457 COMMITTEE Mr David Hirst Mrs Thelma Bridle Mr Roy Hargreaves Mr Malcolm Guy EDITORS: TREASURER Bob & Kerry Bates Iris Freeman 38 Portmarnock Street Fairview Park 5126 Tel: 8251 2443 E-mail [email protected] LIFE MEMBERS Mr R. Hargreaves Mr L. Nesbitt Mr D. Wells Mr R. Robjohns Mr G. Carne Mr R. Bates Mr R Shooter Registrar of Judges: George Nieuwenhoven Trading Table: Judy Penney Trips & Conservation: Ms Thelma Bridle Tel. 83844174 Tuber Bank Coordinator: Malcolm Guy Tel. 82767350 PATRON: Mr T.R.N. Lothian The Native Orchid Society of South Australia Inc. while taking all due care, take no responsibility for the loss, destruction or damage to any plants whether at shows, meetings or exhibits. Views or opinions expressed by authors of articles within this Journal do not necessarily reflect the views or opinions of the Management. We condones the reprint of any articles if acknowledgement is given. Journal cost $2 per issue. Subscription $14 family or single. 51 NATIVE ORCHID SOCIETY OF SOUTH AUSTRALIA INC JULY 1999 Vol. 23 No. 6 JOURNAL JULY MEETING Tuesday July 27 at 8.00 pm: Saint Matthews Hall Bridge Street, Kensington. Australian Orchid Specialist Mark Clements will speak on 'Dendrobium orchid nomenclature'. Doors open. at 7.15 to allow trading table to setup and library to proceed. PAGE CONTENTS AUTHOR 51 Diary Dates 52 On the Bench. 53 Last Month's Speaker. Coining field trips Eds & Thelma 54 Warren & Hale Excursion Thelma Bridle' 55 Librarian's Report Geoff Edwards 56-7 Aussie Terrestrial Orchid Culture G Nieuwenhoven 58 Conservation issues Sandy Phillips 59 Aussie Dendrobiums Mark Phillips 60 Spring Show! We need your help! DIARY DATES July 24 Pterostylis Smaragdina special Scott Creek August 15 Winter Orchids Jenkins Scrub August 28 Quorn Trip Flinders Ranges Sept 3-5 Yorke Peninsula Springtime Spectacular Curramulka Sept 18-19 NOSSA Spring Show St Peters Oct l7 Annual Echunga Picnic Echunga Nov 7 Three Duck Orchids Ashbourne January 2000 Three Dipodium species Naracoorte April 3-4 2000 SE Genoplesiums, Pterostylis parviflora Mt Monster Oct 5-8 Native Orchid Conference Melbourne Next Committee Meeting: Wed August 4 at 7:30 at the home of Malcolm Guy. 15 Naomi Tce Pasadena. Ph 82767350 FOR DETAILS OF COMING EXCURSIONS SEE PAGE 58 NEXT FIELD TRIP: CHANGE OF PLANS The planned Pterostylis melagramma special excursion in August has been changed to 'Pterostylis smaragdina special at Scott Creek' Saturday July 24. Meet at 10am at the Cherry Gardens Cemetery. The species is flowering earlier than thought and has just been correctly determined by David Jones himself. 52 ON THE BENCH Epiphytes Bulbophyllum bowkettae, B. macphersonii, B. schillerianum, Dendrobium Allyn Star, D. Annes Rainbow Surprise, D. Aussie Angel, D. Aussie Child, D. bigibbum, D. Brolga Star, D. Big Fleck x Kuringai, D. Elegant Autumn, D. Ellen, D. Hilda Poxon, D. Graham Banks, D. Jesmond Dazzler, D. Kim Heinz, D. Peewee x Dot Sheen x Aussie Victory, D. Rays Dream. The epiphytes looked spectacular with an amazing array of winter hybrids. Our commentator pointed out the diversity to be seen in a single hybrid like D. Hilda Poxon, which has been remade many times with better parents. Terrestrials Acianthus sinclairii, Chiloglottis palachila, Pterostylis alata, P. concinna (yellow), P. dolichochila, P. reflexa, P. robusta, P. russellii, P. sanguinea, P. vittata, P. Sentinel, P. Trunkfish, The terrestrials were suffering a mid winter slump and in addition some major growers were not present. Our commentator pointed out that some pots had one sided growth. This is usually caused by uneven watering in Autumn. The surface of the pot is seldom exactly level and water runs to the lower side where it sinks down to the tubers causing them to germinate and grow well, the other side may look damp on top but the tubers below remain dry and dormant. Watering with a hand held hose is even worse as water collects in the direction of spray and the side nearest the person watering may be bone dry! It is best to use a slow overhead sprinkler. PLANT COMMENTARIES Les Burgess & Reg Shooter JUDGING Terrestrial species : 1st Pterostylis sanguinea grown by G. Nieuwenhoven 2nd Pterostylis reflexa grown by M. Tiggeman 3rd Pterostylis russellii grown by M. Tiggeman Terrestrial hybrids : None benched Epiphytic species : 1st Bulbophyllum macphersonii grown by G. Nieuwenhoven 2nd Bulbophyllum bowkettae grown by G. Nieuwenhoven Epiphytic hybrids 1st Dendrobium Ellen grown by J & B Gay 2nd D. Hilda Poxon grown by J & B Gay Plant of the Night Dendrobium Ellen POPULAR VOTE Best Terrestrial P. sanguinea Best Epiphytes Dendrobium Colonial Campio 53 LAST MONTHS SPEAKER: Geoff Edwards teased us with some of the exciting aspects of his holiday in Townsville during last years APOC conference! Our own Reg Shooter was one of the speakers; dealing with the wonderful Lycaste! Our July speaker Mark Clements was another of the top speakers, providing a nice touch of controversy on the nomenclature of Dendrobium bigibbum - phalenopsis. From there we travelled with Geoff and his wife up to Cairns via Ingham and Wallaman Falls, the tallest single drop in Australia. Geoff and co were lucky enough to be shown around by none other than Bill Lavarack one of Qld's top orchidologists. AUGUST FIELD TRIPS Sun 1st Aug. Yorke Peninsula, visiting Agery, Moonta and Ardrossan. Meet : Information board at Port Wakefield, 9am. Sun 8th Aug. Hartley and Monarto for early Caladenia sp. Meet : On the bridge above the freeway at the Callington/Strathalbyn turn-off, 10am. Sun 15th Aug. Jenkin's Scrub, Mount Crawford Forest. Winter flowering orchids Meet : Mount Crawford Forest Information Centre, Warren Road, 10am. Quorn Weekend (28/29 Aug). Dutchman's Stern Conservation Park orchid survey. Accommodation booked at the old homestead in Dutchman's Stern Conservation Park for Fri and Sat nights. Cost $10 per night per person. Maximum of 15 people. Bedding required. Kitchen and bathroom facilities provided. Please arrive Friday afternoon/evening. From Quorn 7km N. on Arden Vale Road, towards Warren Gorge. Park turn-off on left. Yorke Peninsular Weekend (4/5 Sept.) Muloowurtie Reserve, Pt. Julia, Pt. Vincent, Stansbury, Yorketown and Warooka area. Meet : Muloowurtie Reserve at 10am on Sat. Ulanlan south of Ardrossan, turn R. onto the Minlaton Rd.. Muloowurtie Reserve is 4km. on L. Suggested o/n at either Pt. Vincent or Stansbury. Sun meet : Yorketown 9am. Please let Thelma Bridle know if you intend to come on either of the weekend trips (8384 4174). Thank you. My apologies for the cancellation of the Tailem Bend field trip, due to my sickness and the inappropriateness of bridal creeper weeding at this time. It has been decided that trips will not be cancelled in the future, just re- arranged if necessary, but with the same meeting time and venue. Thelma Bridle Welcome to new member Trevor Garrod of Adelaide 54 FIELD TRIP REPORT - WARREN AND HALE CONS PARKS by Thelma Bridle Both Warren and Hale Conservation Parks have steep, rocky ridges with messmate stringybark, long-leaved box and pink gum. There are excellent views to be had of the surrounding areas on a fine sunny day, such as Sunday 27th June. 13 NOSSA members and a visitor from Springton wandered up the steep hillside in Warren C.P. looking amongst the leaf litter for signs of orchids. We found plenty of leaves and a number of fungi species. The Caladenia sp. leaves ranged from smooth, broad leaves such as Leptoceras menziesii, through small hairy leaves to large, thick and densely hairy, probably Caladenia tentaculata. Colonies of Corybas dilatatus had flower buds formed, but the Acianthus caudatus on this shady southern slope had few buds. The north-facing hillside had a few short Pterostylis sanguinea in flower and on the lower slopes many Acianthus pusillus flowers. The bare rocky outcrop on the next ridge had some larger P. sanguinea and P. alata. There was some discussion as to whether some flowers were P. robusta, mainly due to their short stature, but these may be a hybrid as their forms were quite variable. A few Genoplesium rufum seedpods were found, several Thelymitra sp. leaves, some T. pauciflora, others perhaps T. nuda. A colony of Pterostylis biseta rosettes was discovered in an open mossy area. After a relaxing lunch, bird-watching and enjoying the sunshine we drove through Williamstown to Hale Conservation Park. This area was filled with flowering flame heath (Astroloma conostephioides) and we had to peer under the bushes looking for orchid leaves. The corners of the 2 parks almost meet, so it was not surprising to find many of the same species of orchid. Some of the Caladenia sp. leaves may have been C. carnea which we had not found at Warren. We walked uphill to the ridge top track, which is lined with the uncommon oyster bay pine (Callitris rhomboidea). Baeckea crassifolia was also common. Along the track were many Genoplesium aff. rufum seedpods, Acianthus pusillus and Pterostylis sanguinea both flowering. There were also several different forms of Pterostylis nana.
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